145218311 has 16 divisors (see below), whose sum is σ = 178272000. Its totient is φ = 117916344.

The previous prime is 145218299. The next prime is 145218317. The reversal of 145218311 is 113812541.

It is not a de Polignac number, because 145218311 - 2¹⁰ = 145217287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145218317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4625 + ... + 17658.

It is an arithmetic number, because the mean of its divisors is an integer number (11142000).

Almost surely, 2^145218311 is an apocalyptic number.

145218311 is a deficient number, since it is larger than the sum of its proper divisors (33053689).

145218311 is an equidigital number, since it uses as much as digits as its factorization.

145218311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22323 (or 22309 counting only the distinct ones).

The product of its digits is 960, while the sum is 26.

The square root of 145218311 is about 12050.6560402328. The cubic root of 145218311 is about 525.6223138945.

The spelling of 145218311 in words is "one hundred forty-five million, two hundred eighteen thousand, three hundred eleven".